Elementary Machine Design (Classic Reprint)

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Excerpt from Elementary Machine Design One can never become a machine designer by studying a book. The true designer is one whose judgment is ripened by experience in constructing and Operating machines. Mr. William B. Bement, a designer in the true sense, once said that he thought it useful to figure the strength of machine parts, because the results were sug gestive to the designer. One may know thoroughly the laws which govern the transmission of energy, may understand much concern ing the nature of constructive materials may know how to obtain results by mathematical processes, and yet be unable to design a good machine. One needs also to know the thousand and one things connected with practice, which constantly modify design, so that one can take the results of computation and accept, reject, and modify, until the machine will, when constructed, do its required work satisfactorily and enduringly. The writer once heard Professor John E. Sweet say: It is comparatively easy to design a good new machine, but it is very hard to design a machine which will be good when it is old. This quality of foresight only comes with long experience. There is, however, a certain part of the designer's mental equip ment which may be furnished in the class-room, or by books. This is the writer's excuse for the following pages. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.